Heating device



A. E. BUTTON.

HEATING DEVICE.

APPUCATION r|LED1uLY 9.1921.

Patented Sept 12, 1922.

HWI@ Ov7-nsw Patented Sept. 12, 1922.

PATENT OFFICE.

LFBED E. BUTTON, F CLEVELAND, OHIO.

HEATING DEVICE.

Application led July 9, 1921.

To all whom t may concern:

Be it known that I, ALFRED E. DUT'roN, a citizen of the United States,resident of Cleveland, county of Cuyahoga, and State 6 of Ohio, haveinvented new and useful Improvements in Heating Devices, of which thefollowing is a specification, the principle of the invention belngherein explained and the best mode in which I have contemplated applyingthat principle, so as to distinguish it from other inventions.

My invention relates to heating devices and particularly to heatingdevices of a portable nature, electrically operated and provided withmeans for producing a forced draft. The object of the invention is torovide a device of the above described c aracter which is economical ofconstruction and eicient in the performance of its function.

The said invention consists of means hereinafter fully described andparticularly set forth in the claims. More specifically, my inventionincludes a heating device in which a multiplicity of chambers areprovided, adjacent chambers communicating with each other through themedium of restricted openings, these chambers being preferablysuperposed, the uppermost chamber communicating by means of a duct, withthe atmosphere, and the lowermost chamber communicating also with theatmosphere and associated with a fan for forcing atmospheric air throu hsaid chambers, baille plates being provided upon the interior of saidchambers whereby a given amount of retardation of the air current isproduced in each chamber; the latter being each furthermore providedwith an electrically heated element for heating the air as it passesthrough or is retarded in said chambers. Other features of my invention.will be hereinafter more fully described.

The annexed drawing and the following descri tion set forth in detailcertain means embo ying my invention, the disclosed means, however,constituting but one of the ivarious mechanical forms in which theprinciple of the invention may be employed.

In said annexed drawing:

Figure 1 represents a front elevation of` a portable heater embodying myinvention. Figure 2 represents a side. elevatlon of same.

Figure 3 represents a section taken upon Serial N0. 483,4.

ure 1.

Figure 4 represents a section taken u on the planes indicated by linesIV--IV, igure 3.

lFigure 5 represents a diagram of the electrical connectlon.

The illustrated embodiment of my invention includes a housing 1consisting of a front flat rectangular outer plate 2 of sheet metal andan inner insulating asbestos plate or lining 3; and a back sheet metalplate 4 which is curved as at 5 forming an enlargement 6 of a rearcompartment 7 of the housing, which compartment will be hereinafter morespecifically referred to.

'The ends of the housing 4consist of asbestos plates 8 and the to andbottom of rectangular plates 9 an 10 respectively. The interior of thespace enclosed by this housing is divided by a vertical partitionconsisting ofthe plate or asbestos lining 12.

Forming a frame for these plates are two forward channel bars 13-13,Figure 4, a bottom horizontal angle bar 14, vertical rear angle bars15-15; and the lates are suitably secured to the frame t us formed bymeans of screws and angle clips in any desired or well known manner.Suitable legs (ll are provided as shown as well as a han- The top of thecom artment 7 communicates with the atmosp ere by means of an opening 16in which is placed a suitable screen 17 for filtering the air whichpasses therethrough. The bottom of the compartment 7 is provided with anopening 18 through which rojects an extension 19 formed upon the ottomof a casing 20 of a heating member which is placed within the othercompartment 21 formed bythe partition plate 12.

The extension 19 opens into the lower part of the compartment 7 andlocated within said extension is a fan 22 operated by a motor 23 whichis located in the enlargement 6 of the compartment 7.

The casing 20 consists of two plates 24 and 25, each corrugated asshown, therear plate being formed with the extension 19. The number ofcorrugations are equal and they are similar in form so that when theplates are placed opposite each other as shown, chambers 26-26 areformed. Ad-

jacent chambers communicate with each as shown, and extendssubstantially throughout the entire width of the heater.

The uppermost chamber is provided with a baille late 29 which inclinesdownwardly and bac wardly and is located adjacent to the uppermostopening 27 A similar baille plate 1s placed near the otherrestrictedopening 27 excepting the lowermost one. Adjacent to therestricted openings 27 other than the topmost and lowermost openings,are upwardly and -forwardly(project1ng baffle plates 30. These latterexten throughout the width of the chambers 26. 'The ends of thesechambers are formed by the end asbestos plates 8. The rear plate 25 issecured in place and to the adjacent plates by means of suitable screwsand chps 1n any desired manner, its bottom resting upon the bottom plate10. The front plate 24 1s also secured in a desired manner by means ofsuitable screws or clips and preferably has secured to it the fronthousing plates 2 and 3, so that when it is desired to have access to theinterior of chambers 26 the reuired screws may be loosened and the saidfront plate 24 With the attached plates 2 and 3 removed.

The motor 23 is connected with a suitable source of electricity and asuitable switch 31, Figures 1 and 5, is provided for starting andstopping same.

Extending through each of the chambers 26 is a suitably supportedinsulated bar 32 which carries a resistance or heating wire 33. Thesewires are connected in parallel in the circuit as shown in Figure 5. Theswitch 31 is so arranged that these heating wires may be thrown into orout of the circuit in succession, as will be readily understood, so thatfor thepurposes of heat regulation one or more of the heating wires maybe made operative.

In use, the above described device operates as follows:

The switch 31 is thrown to first close the motor circuit whereuponthe'fan operates and draws air through the opening 16 downwardly throughthe compartment 7 through the extension 19 and upwardly through thechambers 26 from whence it finally emerges ina horizontal direction fromthe duct 28. The switch is then further closed, sending the currentthrough the required heating wires which becoming incandescent heat theair passing'through said chambers. In so passing, however, this aircomes into contact with the baffle plates which divert the current andretard its progress, thus creating a circulation whlch permits theheating wires to impart to the air, the required amount 0f heat. It willthus be seen that the heat of the heating elements may be efficientlyapplied and by regulating the speed of the motor and controlling thenumber of heating elements, the temperature of the emitted an' lmay beregulated. Furthermore, the above described construction is such, thatready access may be had to the heating elements and substantially theentire construction may be made of sheet metal, and may be readily andeconomically assembled.

What I claim is:

1. In a heating device, the combination of a housing having twocompartments formed therein, the one compartment communicating at thetop with the atmosphere and having an opening at the bottom; a casing insald other compartment communicatin at the top with the atmosphere andat the ottom with said first-named compartment; electrical heating meansin said casing; and means for forcing air from said first-namedcompartment through said casing.

2. In a heating device, the combination of4 a housing having twocompartments formed therein, the one compartment communicating at thetop with the atmosphere and having an opening at th`e bottom; akcasingin said other compartment communicating the top with the atmosphere andat the bottom with said first-named compartment, and consisting of twoseparate plates having oppositely disposed corrugations forming amultipliclty of chambers, and separate end walls; electrical heatinmeans located in each such chamber; an means for forcing atA throughsaid casin 3. fn a heating device, a heating member consisting of thecomblnation of a casing forming a multiplicity of chambers, adjacentchambers being connected with each 'other by means of restrictedopenings; a duct communicating with one end chamber by means of' arestricted opening, and also communicating with the atmosphere;electrical heating means located in each such chamber; and means forforcing air through such casing.

4. In a heating-device, a heating member consisting of the combinationof a casing forming a multiplicity of'chambers, adjacent chambers beingconnected with each other by means of restricted openings; a ductcommunicating with one end chamber by means of a restricted opening andalso communicating with the atmosphere; of electrical heating meanslocated in each such chamber; and means for forcing air throughconsisting of the combination of a casing forming a multiplicity otchambers, adjacent chambers being connected With each other by means ofrestricted openings; a duct communicating with one end chamber by meansof a restricted opening, and also communicatin with the atmosphere; ofelectrical heating means located in each such chamber; andmeans forfore-in air through such casing; said chambers being provided Withbaffle plates located adjacent to the restricted openings which affordcommunication between adjacent chambers, the baffle plates adjacent toany one of said restricted openings being located respectively uponopposite side thereof.

6. In a heating device, a heating member consisting of the combinationof a casing forming a multiplicity of chambers, adjacent chambers beingconnected with each other by means of restricted openings; a duetcommunicating with one end chamber by means of a restricted opening, andalso communicating with the atmosphere; electrical heating means locatedin each such chamber; and means for forcing air through such casing;said chambers being provided With baffle plates located adjacent to therestricted openings which aii'ord communication between adjacentchambers, the baille plates of any one of said restricted openings beinglocated respectively upon opposlte sides thereof, such balile platesbeing oppositely inclined.

Signed by me this 2nd day of July, 1921. ALFRED E. DUTTON.

